基于GM制冷机的4K顶部换样低温设计及试验验证  

Low Temperature Design and Test Verification of 4 K Top Sample Change Based on GM Refrigerator

作　　者：许治勇 李艳锋 聂杨 乔珂 XU Zhiyong;LI Yanfeng;NIE Yang;QIAO He(CSSC Pride(Nanjing)Cryogenic Technology Co.,LTD,Nanning 211153,China)

机构地区：[1]中船鹏力(南京)超低温技术有限公司,江苏南京211100

出　　处：《大学物理实验》2024年第5期88-92,共5页Physical Experiment of College

摘　　要：在接收微波信号用的低噪声放大器的红外探测元件,常用密闭循环的小型制冷机冷却中,进行电学、光学和磁热性能等基础实验。本文在以GM制冷机为基础,设计了一款4K顶部换样的结构,并进行了详细的理论分析和试验验证,确认了该结构的尺寸,取得一定的进展和成果。The basic experiments of electrical,optical and magnetothermal properties are carried out in the infrared detection element of low noise amplifier used to receive microwave signal,which is usually cooled by small refrigerator with closed cycle.Based on GM refrigerator,a 4 K top change structure is designed,and the detailed theoretical analysis and test verification are carried out to confirm the size of the structure,and some progress and results are achieved.

关 键 词：GM制冷机 顶部换样 低温设备 

分 类 号：TH452[机械工程—机械制造及自动化]